Ariel Winter turned up the heat at the premiere of the lame-looking The Odd Life of Timothy Green in LA thanks to this Erin Featherston frock and a serious push-up bra. It seems our little Modern Family star is leaving her geeky alter ego behind and, shall we say, busting out into young womanhood.

Does her costar Sarah Hyland need to develop some serious curves ASAP if she wants anyone to believe she’s Ariel’s older, sexier sister?

WENN